Now showing items 1-6 of 6

    • ECOAL project: delivering solutions for integrated monitoring of coal-related fires supported on optical fiber sensing technology 

      Ribeiro, Joana; Viveiros, Duarte; Ferreira, João; López Gil, Alexia; Domínguez López, Alejandro; Martins, Hugo F.; Pérez Herrera, Rosa Ana Upna; López Aldaba, Aitor Upna; Duarte, Lia; Rodrigues Pinto, Ana Margarida Upna; Martín López, Sonia; Baierl, Hardy; Jamier, Raphael; Rougier, Sébastien; Auguste, Jean-Louis; Teodoro, Ana Cláudia; Gonçalves, José Alberto; Esteban, Óscar; Santos, José Luís; Roy, Philippe; López-Amo Sáinz, Manuel Upna; González Herráez, Miguel; Baptista, José Manuel; Flores, Deolinda (MDPI, 2017)   Artículo / Artikulua  OpenAccess
      The combustion of coal wastes resulting from mining is of particular environmental concern, and the importance of proper management involving real-time assessment of their status and identification of probable evolution ...
    • Fiber cavity ring down and gain amplification effect 

      Silva, Susana; Magalhães, Regina; Pérez Herrera, Rosa Ana Upna; López-Amo Sáinz, Manuel Upna; Marques, M. B.; Frazão, Orlando (Springer Nature, 2016)   Artículo / Artikulua  OpenAccess
      The effect of an erbium-doped fiber amplifier (EDFA) placed inside the fiber ring of a cavity ring down (CRD) configuration is studied. The limitations and advantages of this configuration are discussed, and the study of ...
    • Long-range hybrid network with point and distributed Brillouin sensors using Raman amplification 

      Zornoza Indart, Ander; Pérez Herrera, Rosa Ana Upna; Elosúa Aguado, César Upna; Díaz Lucas, Silvia Upna; Bariáin Aisa, Cándido Upna; Loayssa Lara, Alayn Upna; López-Amo Sáinz, Manuel Upna (Optical Society of America, 2010)   Artículo / Artikulua  OpenAccess
      We propose a novel concept for hybrid networks that combine point and distributed Brillouin sensors in a cost-effective architecture that also deploys remote distributed Raman amplification to extend the sensing range. A ...
    • Robust fiber-optic sensor networks 

      Pérez Herrera, Rosa Ana Upna; Fernández Vallejo, Montserrat Upna; López-Amo Sáinz, Manuel Upna (Springer, 2012)   Artículo / Artikulua  OpenAccess
      The ability to operate despite failure will become increasingly important as the use of optical sensor networks grows, and the amount of sensing information to be handled by a sensor network is increasing, especially for ...
    • Simultaneous measurement of humidity and vibration based on a nanowire sensor system using Fast Fourier Transform technique 

      Rota Rodrigo, Sergio Upna; López Aldaba, Aitor Upna; Pérez Herrera, Rosa Ana Upna; López Bautista, María del Carmen; Esteban, Óscar; López-Amo Sáinz, Manuel Upna (IEEEOptical Society of America, 2016)   Artículo / Artikulua  OpenAccess
      This paper presents a new sensor system for vibration and relative humidity measurements based on its interaction with the evanescent field of a microwire. The interrogation of the sensing head is carried out by monitoring ...
    • Single-longitudinal-mode dual wavelength-switchable fiber laser based on superposed fiber bragg gratings 

      Pérez Herrera, Rosa Ana Upna; Rodriguez-Cobo, L.; Quintela, M. A.; López Higuera, José Miguel; López-Amo Sáinz, Manuel Upna (IEEE, 2015)   Artículo / Artikulua  OpenAccess
      n this work, a simple switchable dual-wavelength short-cavity fiber laser operating in a single-longitudinal-mode regime at room temperature and based on superposed fiber Bragg gratings is proposed and experimentally ...